ZIP Code 20670

ZIP Code Tabulation Area in St. Mary's County, Maryland.

Population: 1,577
Median household income: $70,945

ZIP Code 20670 is a ZIP Code Tabulation Area in St. Mary's County, Maryland, home to about 1,577 residents. The median household income of $70,945 is below the St. Mary's County median ($114,580).

From 2019 to 2023, ZIP Code 20670's population grew 9.4% from 1,441 to 1,577, while its median gross rent rose 21.5% from $1,837 to $2,232.

The largest age group is 5 to 17, 22.8% of residents. White (non-Hispanic) residents are the largest group, 54.2% of the population.

Demographics

ACS 2019–2023

Population: 1,577
Median age: 22.9 yrs
Median household income: $70,945
Median home value: —
Median gross rent: $2,232
Housing units: 491
Homeownership rate: 0.0%
Bachelor's degree or higher: 25.8%
Unemployment rate: 0.0%

Trends

ACS 5-year · 2019–2023

Population

1,4411,577

Median household income

$53,836$70,945

Median gross rent

$1,837$2,232

Year	Population	Median household income	Median gross rent
2019	1,441	$53,836	$1,837
2020	1,620	$56,813	$1,818
2021	1,451	$70,000	$1,836
2022	1,403	$53,125	$2,000
2023	1,577	$70,945	$2,232

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 516.8%

5 to 1722.8%

18 to 2418.8%

25 to 3419.5%

35 to 4420.2%

45 to 540.8%

55 to 640.3%

65 to 740.6%

75 and over0.3%

	Count	Share
Under 5	265	16.8%
5 to 17	359	22.8%
18 to 24	297	18.8%
25 to 34	307	19.5%
35 to 44	318	20.2%
45 to 54	13	0.8%
55 to 64	5	0.3%
65 to 74	9	0.6%
75 and over	4	0.3%

Race & ethnicity

	Count	Share
White (non-Hispanic)	854	54.2%
Black or African American	384	24.4%
American Indian & Alaska Native	44	2.8%
Asian	10	0.6%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	0	0.0%
Two or more races	119	7.5%
Hispanic or Latino (any race)	166	10.5%

Educational attainment (age 25+)

No high school diploma0.0%

High school graduate34.6%

Some college or associate's39.6%

Bachelor's degree15.9%

Graduate or professional degree9.9%

	Count	Share
No high school diploma	0	0.0%
High school graduate	227	34.6%
Some college or associate's	260	39.6%
Bachelor's degree	104	15.9%
Graduate or professional degree	65	9.9%

Commute to work

Mean travel time to work: 9 min

Drove alone64.9%

Carpooled10.2%

Public transit0.0%

Walked19.8%

Bicycle0.6%

Worked from home4.5%

Other means0.0%

How workers get to work

	Count	Share
Drove alone	443	64.9%
Carpooled	70	10.2%
Public transit	0	0.0%
Walked	135	19.8%
Bicycle	4	0.6%
Worked from home	31	4.5%
Other means	0	0.0%

Travel time

	Count	Share
Under 15 min	522	80.1%
15 to 29 min	99	15.2%
30 to 44 min	21	3.2%
45 to 59 min	10	1.5%
60+ min	0	0.0%

Households

Average household size: 3.55
Poverty rate: 0.0% (0 of 1,425)

	Count	Share
Family households	395	98.5%
Nonfamily households	6	1.5%

Housing

Median year structure built: 1995

Occupancy

	Count	Share
Occupied	401	81.7%
Vacant	90	18.3%

Tenure (of occupied units)

	Count	Share
Owner-occupied	0	0.0%
Renter-occupied	401	100.0%

1-unit, detached6.9%

1-unit, attached75.8%

2 to 4 units5.1%

5 to 19 units0.0%

20 or more units12.2%

Mobile home & other0.0%

Units in structure

	Count	Share
1-unit, detached	34	6.9%
1-unit, attached	372	75.8%
2 to 4 units	25	5.1%
5 to 19 units	0	0.0%
20 or more units	60	12.2%
Mobile home & other	0	0.0%

ZIP Code 20670

Demographics

Trends

Age distribution

Race & ethnicity

Educational attainment (age 25+)

Commute to work

Households

Housing

Geography

Counties this ZIP covers

Compare with nearby ZIP codes

National ZIP rankings

Nearby ZIP codes